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compute a 75% chebyshev interval around the mean

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Old January 18th 09, 11:27 PM posted to microsoft.public.excel.misc
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Default compute a 75% chebyshev interval around the mean

how do you compute the above with a set of data
Old January 19th 09, 04:09 PM posted to microsoft.public.excel.misc
Herbert Seidenberg
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Default compute a 75% chebyshev interval around the mean

% of values within mean +- k => 1-1/k^2
k=standard deviation
75% = 1-1/4 (k=2)

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